Question

3. Determine the velocity and kinetic energy of a neutron having de-Broglie wavelength 1Å. Mass of Neutron is 1.67X10 -27 kg and h = 6.634X10 -34 J-S

Answer 1

Answer:

Multiplying the mass and speed, we obtain the momentum of the particle: p = mv = 2.7309245*10-24 kg·m/s . If we divide the Planck constant by the momentum, we will obtain the de Broglie wavelength: h/p = 6.6261*10-34 / 2.7309245*10-24 = 2.426*10-10 m.